CN209046292U

CN209046292U - A kind of wireless vehicle mounted charging system of ultrasonic sensing

Info

Publication number: CN209046292U
Application number: CN201821617785.7U
Authority: CN
Inventors: 袁少君
Original assignee: Guangzhou Miorange Technology Co Ltd
Current assignee: Guangzhou Miorange Technology Co Ltd
Priority date: 2018-10-02
Filing date: 2018-10-02
Publication date: 2019-06-28
Anticipated expiration: 2028-10-02

Abstract

The utility model relates to a kind of wireless vehicle mounted charging systems of ultrasonic sensing, including single chip machine controlling circuit, ultrasonic wave transmitting circuit, ultrasonic wave to receive circuit, motor drive circuit and touch-control circuit；The single chip machine controlling circuit receives circuit with the ultrasonic wave transmitting circuit, ultrasonic wave respectively and motor drive circuit passes through component and connection.Compared with the prior art, the utility model can effectively reduce cost, and using BS812A, increase anti-interference ability, this chip touch detection is accurate, reduce erroneous judgement possibility；Using ultrasonic wave send-receive, obstacle distance is detected, detection obstacle distance is accurate.

Description

A kind of wireless vehicle mounted charging system of ultrasonic sensing

Technical field

The utility model relates to vehicle-mounted charge technical field, in particular to a kind of wireless vehicle mounted Charging of ultrasonic sensing System.

Background technique

With the reach of science, ultrasonic sensing controls wireless vehicle mounted charging and is practically applicable in current consumption electronic product Charger classification caters to the burning hot market of wireless charging, solves the problems, such as that mobile phone uses cumbersome in driving process, allows driver It drives easier, safe.This product is easy to use, easy to operate, low in cost, and cost performance is high, rich in technology sense, technology Sense, the sense of security.

Wireless vehicle mounted charging technique scheme in the prior art has the disadvantage that 1, is expensive, and cost is excessively high；2, resist Interference performance is poor；3, erroneous judgement possibility is big；4, detection obstacle distance range is wide, inaccurately.

Utility model content

The purpose of the utility model is to provide a kind of wireless vehicle mounted charging system of ultrasonic sensing, technology to be solved is asked Topic is: element used in prior art is expensive, and cost is excessively high；Poor anti jamming capability；It is big to judge possibility by accident；Detect obstacle Object distance range is wide, inaccurately.

The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of wireless vehicle mounted Charging of ultrasonic sensing System, including single chip machine controlling circuit, ultrasonic wave transmitting circuit, ultrasonic wave receive circuit, motor drive circuit and touch-control circuit；Institute It states single chip machine controlling circuit and passes through route with the ultrasonic wave transmitting circuit, ultrasonic wave reception circuit and motor drive circuit respectively Connection；

The single chip machine controlling circuit is transmitted to ultrasonic wave transmitting circuit for periodically issuing enabling signal；It is also used to root The first driving signal, which is generated, according to blocking signal is transmitted to motor drive circuit；It is also used to generate the second driving letter according to touching signals Number it is transmitted to motor drive circuit；

The ultrasound wave transmitting circuit, issues ultrasonic wave for receiving according to enabling signal to ultrasonic wave at circuit；

The ultrasonic wave receives circuit, for receiving ultrasonic wave, when there is barrier to obstruct ultrasonic wave, does not receive ultrasonic wave When, it generates blocking signal and is transmitted to single chip machine controlling circuit；

The motor drive circuit, for being inverted after stopping 1 second according to the rotating forward of the first driving signal drive motor, motor driving Clamp device clamps barrier to setting position；For being inverted after stopping 1 second according to the rotating forward of the second driving signal drive motor, motor Driving clamp device removes barrier from setting position；

The touch-control circuit is transmitted to list for when clamp device clamps barrier, being touched generation touching signals Piece machine control circuit.

Further, the single chip machine controlling circuit include SN8P2711B single-chip microcontroller, limit switch SW1, pull-up resistor RE1, Capacitor C9 and capacitor C10, the VDD pin of the SN8P2711B single-chip microcontroller access voltage 5V, one end of the capacitor C9 with it is described The VDD pin of SN8P2711B single-chip microcontroller connects, and the other end is connect with the VSS pin of the SN8P2711B single-chip microcontroller；The limit One end of bit switch SW1 is connect with the P0.0 pin of the SN8P2711B single-chip microcontroller, other end ground connection；The pull-up resistor RE1 One end connect with the P0.0 pin of the SN8P2711B single-chip microcontroller, the other end access voltage 5V；One end of the capacitor C10 Ground connection, the other end are connect with the P4.2 pin of the SN8P2711B single-chip microcontroller.

Further, the ultrasonic wave transmitting circuit includes driver TC118S and ultrasonic wave emitting head UL1, the driver The INA pin of TC118S is connect with the P4.1 pin of the SN8P2711B single-chip microcontroller；The INB pin of the driver TC118S It is connect with the P4.0 pin of the SN8P2711B single-chip microcontroller；The VDD pin of the driver TC118S accesses 5V voltage；It is described The OUTA pin and OUB pin of driver TC118S are connect with the ultrasonic wave emitting head UL1；The driver TC118S's PGND pin and AGND pin are grounded.

Further, it includes that ultrasonic wave receives head UL2, amplifier U6A, amplifier U6B, two poles that the ultrasonic wave, which receives circuit, Pipe D3, diode D4, resistance R5 to resistance R11, capacitor C13 to capacitor C19, the ultrasonic wave receive the first pin of head UL2 Ground connection, and connect through capacitor C18 with the second pin that ultrasonic wave receives head UL2；One end of the resistance R7 and power vd D connect It connects, the other end is connect with the second pin that the ultrasonic wave receives head UL2；One end of capacitor C16 and the ultrasonic wave receive head The second pin of UL2 connects, and the other end is connect through capacitor C16 with power vd D, and the through resistance R10 and amplifier U6B the 6th Pin connection；One end of the resistance R8 is connect with power vd D, and the other end is grounded through resistance R10；Capacitor C17 and resistance R11 are simultaneously Connection；

The 4th pin of the amplifier U6B is grounded, and the 5th of the amplifier U6B draws foot meridian capacitor C17 ground connection；It is described The 8th pin of amplifier U6B is connect with power vd D；The 6th pin of the amplifier U6B is through resistance R6's and amplifier U6B The connection of 7th pin；The second pin that the 7th of the amplifier U6B draws foot meridian capacitor C14 and resistance R9 and amplifier U6A connects It connects；The second pin of the amplifier U6A is connect with its first pin by resistance R5；The third pin of the amplifier U6A It is connect with the 5th pin of amplifier U6B；The first of the amplifier U6A draws the anode of foot meridian capacitor C13 and diode D3 even It connects, the anode of diode D3 is connect with the P4.3 pin of SN8P2711B single-chip microcontroller；

Connecting pin connection between one end and capacitor C14 and resistance R9 of capacitor C19, other end ground connection；Diode D4's Connecting pin connection between cathode and capacitor C14 and resistance R9, the plus earth of diode D4.

Further, it further includes diode D2, capacitor C20, capacitor C21 and resistance R4 that the ultrasonic wave, which receives circuit, described The anode access 5V voltage of diode D2, the cathode of the diode D2 are connect with power vd D；One end of the capacitor C20 with The anode connection of diode D2, other end ground connection；One end of the capacitor C21 is connect with the cathode of diode D2, another termination Ground；Connection between one end of the resistance R4 and the capacitor C20 and ground connection, the other end and the capacitor C21 with connect Connection between ground.

Further, the motor drive circuit includes TC118S chip, diode D1, capacitor C1, capacitor C2 and resistance R2, The TC118S chip is connect with the cathode of diode D1, the anode access 5V voltage of diode D1；The TC118S chip INA pin is connect with the P5.3 pin of SN8P2711B single-chip microcontroller, the INB pin and SN8P2711B monolithic of the TC118S chip The P5.34 pin of machine connects；

The PGND pin of the TC118S chip is connected with AGND pin, and is grounded through resistance R2；The capacitor C2 and institute It is in parallel to state resistance R2, the capacitor C1 is in parallel with the capacitor C2；The PGND pin and AGND pin of the TC118S chip are also It is connect with the P4.2 pin of SN8P2711B single-chip microcontroller；

The OUTA pin and OUB pin of the SN8P2711B single-chip microcontroller are connect with motor.

Further, the touch-control circuit includes chip BS812A, touch point W3, capacitor C5 to capacitor C8, resistance R1, resistance R3 and diode DS1, the Key1 pin of the chip BS812A are connect with touch point W3；One end of capacitor C5 and chip BS812A The connection of Key1 pin, the other end is grounded through resistance R3；Capacitor C8 is in parallel with capacitor C5；One end of the capacitor C6 and chip The VDD pin of BS812A connects, and the other end is grounded through resistance R3；The capacitor C7 is in parallel with capacitor C6；The anode of diode DS1 5V voltage is accessed, the cathode of diode DS1 is connect with the VDD pin of chip BS812A；The Kout1 pin of chip BS812A is through electricity It hinders R1 and accesses 5V voltage；The Kout1 pin of chip BS812A is connect with the P0.1 pin of SN8P2711B single-chip microcontroller.

It further, further include power supply circuit, the power supply circuit emits with the single chip machine controlling circuit, ultrasonic wave respectively Circuit, ultrasonic wave receive circuit, motor drive circuit is connected with touch-control circuit, stablize output 5V voltage.

The beneficial effects of the utility model are: can effectively reduce cost, using BS812A, increase anti-interference ability, this core Piece touch detection is accurate, reduces erroneous judgement possibility；Using ultrasonic wave send-receive, detect obstacle distance, detection barrier away from From accurate.

Detailed description of the invention

Fig. 1 is a kind of module frame chart of the wireless vehicle mounted charging system of ultrasonic sensing of the utility model；

Fig. 2 is the circuit diagram of the utility model single chip machine controlling circuit；

Fig. 3 is the circuit diagram of the utility model ultrasound wave transmitting circuit；

Fig. 4 is the circuit diagram that the utility model ultrasonic wave receives circuit；

Fig. 5 is two circuit diagrams that the utility model ultrasonic wave receives circuit；

Fig. 6 is the circuit diagram of the utility model motor drive circuit；

Fig. 7 is the circuit diagram of the utility model touch-control circuit；

Fig. 8 is the circuit diagram of the utility model power supply circuit.

In attached drawing, parts list represented by the reference numerals are as follows:

1, single chip machine controlling circuit, 2, ultrasonic wave transmitting circuit, 3, ultrasonic wave reception circuit, 4, motor drive circuit, 5, Touch-control circuit, 6, power supply circuit.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

As shown in Figures 1 to 8, the wireless vehicle mounted charging system of a kind of ultrasonic sensing, including it is single chip machine controlling circuit 1, super Sonic wave transmitting circuit 2, ultrasonic wave receive circuit 3, motor drive circuit 4 and touch-control circuit 5；The single chip machine controlling circuit 1 divides Connection is not passed through with the ultrasonic wave transmitting circuit 2, ultrasonic wave reception circuit 3 and motor drive circuit 4；

The single chip machine controlling circuit 1 is transmitted to ultrasonic wave transmitting circuit 2 for periodically issuing enabling signal；It is also used to The first driving signal, which is generated, according to blocking signal is transmitted to motor drive circuit 4；It is also used to generate second according to touching signals and drive Dynamic signal is transmitted to motor drive circuit 4；

The ultrasound wave transmitting circuit 2, issues ultrasonic wave for receiving according to enabling signal to ultrasonic wave at circuit 3；

The ultrasonic wave receives circuit 3, for receiving ultrasonic wave, when there is barrier to obstruct ultrasonic wave, does not receive ultrasound When wave, generates blocking signal and be transmitted to single chip machine controlling circuit 1；

The motor drive circuit 4, for inverting after stopping 1 second according to the rotating forward of the first driving signal drive motor, motor is driven Dynamic clamp device clamps barrier to setting position；For being inverted after stopping 1 second according to the rotating forward of the second driving signal drive motor, horse Barrier is removed from setting position up to driving clamp device；

The touch-control circuit 5 is transmitted to list for when clamp device clamps barrier, being touched generation touching signals Piece machine control circuit 1.

In above-described embodiment, as shown in Fig. 2, the single chip machine controlling circuit 1 includes SN8P2711B single-chip microcontroller, limits and open SW1, pull-up resistor RE1, capacitor C9 and capacitor C10 are closed, the VDD pin of the SN8P2711B single-chip microcontroller accesses voltage 5V, described One end of capacitor C9 is connect with the VDD pin of the SN8P2711B single-chip microcontroller, the other end and the SN8P2711B single-chip microcontroller The connection of VSS pin；One end of the limit switch SW1 is connect with the P0.0 pin of the SN8P2711B single-chip microcontroller, another termination Ground；One end of the pull-up resistor RE1 is connect with the P0.0 pin of the SN8P2711B single-chip microcontroller, and the other end accesses voltage 5V； One end of the capacitor C10 is grounded, and the other end is connect with the P4.2 pin of the SN8P2711B single-chip microcontroller.

SN8P2711B single-chip microcontroller can be effectively reduced cost using loose writing brush SN8P2711B single-chip microcontroller, and 5V DC power supply passes through The power supply of C9 filter capacitor, C10 are ADC current sample capacitor, RE1 limit switch pull-up resistors of pull-up resistor.

In above-described embodiment, as shown in figure 3, the ultrasound wave transmitting circuit 2 includes that driver TC118S and ultrasonic wave are sent out A UL1 is penetrated, the INA pin of the driver TC118S is connect with the P4.1 pin of the SN8P2711B single-chip microcontroller；The driving The INB pin of device TC118S is connect with the P4.0 pin of the SN8P2711B single-chip microcontroller；The VDD of the driver TC118S draws Foot accesses 5V voltage；The OUTA pin and OUB pin of the driver TC118S are connect with the ultrasonic wave emitting head UL1；Institute The PGND pin and AGND pin for stating driver TC118S are grounded.

Driver TC118S is that H bridge TC118S, SN8P2711B single-chip microcontroller issues enabling signal (R_UP, L_UP) by H bridge TC118S, driving ultrasonic wave emitting head UL1 issue ultrasonic wave.

In above-described embodiment, as shown in figure 4, it includes that ultrasonic wave receives head UL2, amplifier that the ultrasonic wave, which receives circuit 3, U6A, amplifier U6B, diode D3, diode D4, resistance R5 to resistance R11, capacitor C13 to capacitor C19, the ultrasonic wave connect The first pin ground connection of head UL2 is received, and is connect through capacitor C18 with the second pin that ultrasonic wave receives head UL2；The resistance R7's One end is connect with power vd D, and the other end is connect with the second pin that the ultrasonic wave receives head UL2；One end of capacitor C16 and institute State the second pin connection that ultrasonic wave receives head UL2, the other end connect through capacitor C16 with power vd D, and through resistance R10 and The 6th pin of amplifier U6B connects；One end of the resistance R8 is connect with power vd D, and the other end is grounded through resistance R10；Electricity It is in parallel with resistance R11 to hold C17；

The model of amplifier U6A and amplifier U6B are LM358；It can effectively reduce cost；Ultrasonic wave receives head UL2 and connects Ultrasonic signal is received by amplifier U6A and amplifier U6B, so that blocking signal (output) amplification is input to On SN8P2711B single-chip microcontroller, the see-saw circuit built using amplifier U6A and amplifier U6B is believed for amplified barrier Number (output) enhances stability；The effect of capacitor C11 and capacitor C12 are logical high frequency resistance low frequencies, and diode D3 is rectifying and wave-filtering Effect；Capacitor C14 is coupled capacitor；Diode D4, capacitor C19 play protection circuit function.

In above-described embodiment, as shown in figure 5, it further includes diode D2, capacitor C20, capacitor that the ultrasonic wave, which receives circuit 3, The anode access 5V voltage of C21 and resistance R4, the diode D2, the cathode of the diode D2 are connect with power vd D；It is described One end of capacitor C20 is connect with the anode of diode D2, other end ground connection；One end of the capacitor C21 and bearing for diode D2 Pole connection, other end ground connection；One end of the resistance R4 and the capacitor C20 and ground connection between connection, the other end with Connection between the capacitor C21 and ground connection.

5V passes through rectifier diode D2 rectifying and wave-filtering and the filtered output DC power supply of capacitor C20 and capacitor C21 VDD ensures that ultrasonic wave receives 3 stable operation of circuit.

In above-described embodiment, as shown in fig. 6, the motor drive circuit 4 includes TC118S chip, diode D1, capacitor C1, capacitor C2 and resistance R2, the TC118S chip are connect with the cathode of diode D1, the anode access 5V electricity of diode D1 Pressure；The INA pin of the TC118S chip is connect with the P5.3 pin of SN8P2711B single-chip microcontroller, the INB of the TC118S chip Pin is connect with the P5.34 pin of SN8P2711B single-chip microcontroller；

TC118S chip is rich full TC118S chip, can be effectively reduced cost, motor receives the first driving signal (F, R) Or second driving signal (F, R), by H bridge TC118S chip controls positive and negative rotation of motor；Signal (temp) is current acquisition signal, The P4.2 pin being transmitted on single-chip microcontroller SN8P2711B, one current acquisition resistance R2 of external series connection to ground, capacitor C1 and capacitor C2 is current acquisition filter capacitor, and diode D1 is that rectifying and wave-filtering diode increases circuit anti-interference.

In above-described embodiment, as shown in fig. 7, the touch-control circuit 5 include chip BS812A, touch point W3, capacitor C5 extremely Capacitor C8, resistance R1, resistance R3 and diode DS1, the Key1 pin of the chip BS812A are connect with touch point W3；Capacitor C5 One end connect with the Key1 pin of chip BS812A, the other end is grounded through resistance R3；Capacitor C8 is in parallel with capacitor C5；The electricity The one end for holding C6 is connect with the VDD pin of chip BS812A, and the other end is grounded through resistance R3；The capacitor C7 and capacitor C6 are simultaneously Connection；The anode access 5V voltage of diode DS1, the cathode of diode DS1 are connect with the VDD pin of chip BS812A；Chip The Kout1 pin of BS812A accesses 5V voltage through resistance R1；The Kout1 pin of chip BS812A and SN8P2711B single-chip microcontroller The connection of P0.1 pin.

Chip BS812A is to close Thailand's BS812A chip, can increase circuit anti-interference, touch point W3, capacitor C5 can be adjusted The sensitivity parameter range 0PF-15PF touched is saved, capacitance is smaller sensitiveer, and R3 is that demagnetization filter resistance increases circuit anti-interference Property, capacitor C6, capacitor C7 are that power supply filter capacitor increases circuit anti-interference, and diode DS1 is rectifying and wave-filtering diode, resistance R1 is touching signals (Touch) pull-up resistor.

In above-described embodiment, as shown in figure 8, further include power supply circuit 6, the power supply circuit 6 respectively with the single-chip microcontroller Control circuit 1, ultrasonic wave transmitting circuit 2, ultrasonic wave receive circuit 3, motor drive circuit 4 and touch-control circuit 5 and connect, and stablize defeated 5V voltage out.

Power supply circuit 6 can be effectively reduced cost using Thailand HT7150 LDO power supply is closed, so that this product wide scope input electricity Pressure, VCC voltage range are 5V-30V, and the supply current of highest 300mA, capacitor C3 is input filter capacitor, and capacitor C4 is output Filter capacitor.

Implement above-mentioned technical proposal, power supply circuit 6 gives single-chip microcontroller control electricity using the stable 5V voltage that exports of LDO HT7150 Road 1, ultrasonic wave transmitting circuit 2, ultrasonic wave receive circuit 3, motor drive circuit 4 and touch-control circuit 5 and power, so that single-chip microcontroller control Circuit 1, ultrasonic wave transmitting circuit 2, ultrasonic wave reception circuit 3, motor drive circuit 4 and touch-control circuit 5 processed are started；

The SN8P2711B of single chip machine controlling circuit 1 issues enabling signal (R_UP, L_UP) to ultrasonic wave transmitting circuit 2；It is super The H bridge type TC118S driving ultrasonic wave emitting head UL1 of sonic wave transmitting circuit 2 issues ultrasonic wave, when barrier is sent out close to ultrasonic wave When penetrating a UL1 and ultrasonic wave reception head UL2, when there is barrier to obstruct ultrasonic wave, ultrasonic wave receives head UL2 and does not receive ultrasound Wave, ultrasonic wave receive head UL2 and detect barrier, generate the list that blocking signal (output) is transmitted to single chip machine controlling circuit 1 On piece machine SN8P2711B；Single chip machine controlling circuit 1 generates the first driving signal (F, R) according to blocking signal and is transmitted to motor drive Dynamic circuit 4, barrier is clamped in motor reversion after 4 drive motor of motor drive circuit (W1, W2) rotating forward stops 1 second, is hindered this when Hinder object in this system, touch-control soft-touch control W3 is needed this when to take out barrier, touch point W3 is touched generation Signal touches chip BS812A and generates touching signals (Touch) to single-chip microcontroller SN8P2711B, monolithic to chip BS812A is touched Machine SN8P2711B generates the second driving signal (F, R) according to touching signals and is transmitted to motor drive circuit 4, motor drive circuit 4 Barrier is taken off in motor reversion after drive motor (W1, W2) rotating forward stops 1 second.

This system can effectively reduce cost, and using BS812A, increase anti-interference ability, this chip touch detection is accurate, subtracts Judge possibility by accident less；Using ultrasonic wave send-receive head, obstacle distance is detected, detection obstacle distance is accurate.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims

1. a kind of wireless vehicle mounted charging system of ultrasonic sensing, it is characterised in that: including single chip machine controlling circuit (1), ultrasonic wave Transmit circuit (2), ultrasonic wave receive circuit (3), motor drive circuit (4) and touch-control circuit (5)；The single chip machine controlling circuit (1) receive circuit (3) with the ultrasonic wave transmitting circuit (2), ultrasonic wave respectively and motor drive circuit (4) pass through component and Connection.

2. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 1, it is characterised in that: the single-chip microcontroller control Circuit (1) processed includes SN8P2711B single-chip microcontroller, limit switch SW1, pull-up resistor RE1, capacitor C9 and capacitor C10, described The VDD pin of SN8P2711B single-chip microcontroller accesses voltage 5V, the VDD of one end of the capacitor C9 and the SN8P2711B single-chip microcontroller Pin connection, the other end are connect with the VSS pin of the SN8P2711B single-chip microcontroller；One end of the limit switch SW1 with it is described The P0.0 pin of SN8P2711B single-chip microcontroller connects, other end ground connection；One end of the pull-up resistor RE1 and the SN8P2711B The P0.0 pin of single-chip microcontroller connects, and the other end accesses voltage 5V；One end of the capacitor C10 is grounded, the other end with it is described The P4.2 pin of SN8P2711B single-chip microcontroller connects.

3. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 2, it is characterised in that: the ultrasonic wave hair Transmit-receive radio road (2) includes driver TC118S and ultrasonic wave emitting head UL1, the INA pin of the driver TC118S with it is described The P4.1 pin of SN8P2711B single-chip microcontroller connects；The INB pin of the driver TC118S and the SN8P2711B single-chip microcontroller P4.0 pin connection；The VDD pin of the driver TC118S accesses 5V voltage；The OUTA pin of the driver TC118S It is connect with OUB pin with the ultrasonic wave emitting head UL1；The PGND pin and AGND pin of the driver TC118S connects Ground.

4. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 3, it is characterised in that: the ultrasonic wave connects Receiving circuit (3) includes that ultrasonic wave receives head UL2, amplifier U6A, amplifier U6B, diode D3, diode D4, resistance R5 to electricity R11, capacitor C13 to capacitor C19 are hindered, the ultrasonic wave receives the first pin ground connection of head UL2, and through capacitor C18 and ultrasonic wave Receive the second pin connection of head UL2；One end of the resistance R7 is connect with power vd D, and the other end and the ultrasonic wave receive The second pin connection of head UL2；One end of capacitor C16 is connect with the second pin that the ultrasonic wave receives head UL2, other end warp Capacitor C16 is connect with power vd D, and is connect through resistance R10 with the 6th pin of amplifier U6B；One end of the resistance R8 It is connect with power vd D, the other end is grounded through resistance R10；Capacitor C17 is in parallel with resistance R11；

The 4th pin of the amplifier U6B is grounded, and the 5th of the amplifier U6B draws foot meridian capacitor C17 ground connection；The amplification The 8th pin of device U6B is connect with power vd D；The 6th pin of the amplifier U6B through resistance R6 and amplifier U6B the 7th Pin connection；The 7th of the amplifier U6B draws foot meridian capacitor C14 and resistance R9 is connect with the second pin of amplifier U6A；Institute The second pin for stating amplifier U6A is connect with its first pin by resistance R5；The third pin of the amplifier U6A and amplification The 5th pin of device U6B connects；The first of the amplifier U6A draws foot meridian capacitor C13 and connect with the anode of diode D3, two poles The anode of pipe D3 is connect with the P4.3 pin of SN8P2711B single-chip microcontroller；

Connecting pin connection between one end and capacitor C14 and resistance R9 of capacitor C19, other end ground connection；The cathode of diode D4 Connecting pin between capacitor C14 and resistance R9 is connect, the plus earth of diode D4.

5. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 4, it is characterised in that: the ultrasonic wave connects The anode access 5V voltage that circuit (3) further include diode D2, capacitor C20, capacitor C21 and resistance R4, the diode D2 is received, The cathode of the diode D2 is connect with power vd D；One end of the capacitor C20 is connect with the anode of diode D2, the other end Ground connection；One end of the capacitor C21 is connect with the cathode of diode D2, other end ground connection；One end of the resistance R4 with it is described Connection between connection between capacitor C20 and ground connection, the other end and the capacitor C21 and ground connection.

6. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 4, it is characterised in that: the motor driving Circuit (4) includes TC118S chip, diode D1, capacitor C1, capacitor C2 and resistance R2, the TC118S chip and diode D1 Cathode connection, diode D1 anode access 5V voltage；The INA pin and SN8P2711B single-chip microcontroller of the TC118S chip The connection of P5.3 pin, the INB pin of the TC118S chip connect with the P5.34 pin of SN8P2711B single-chip microcontroller；

The PGND pin of the TC118S chip is connected with AGND pin, and is grounded through resistance R2；The capacitor C2 and the electricity It is in parallel to hinder R2, the capacitor C1 is in parallel with the capacitor C2；The PGND pin and AGND pin of the TC118S chip also with The P4.2 pin of SN8P2711B single-chip microcontroller connects；

7. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 6, it is characterised in that: the touch-control circuit It (5) include chip BS812A, touch point W3, capacitor C5 to capacitor C8, resistance R1, resistance R3 and diode DS1, the chip The Key1 pin of BS812A is connect with touch point W3；One end of capacitor C5 is connect with the Key1 pin of chip BS812A, the other end It is grounded through resistance R3；Capacitor C8 is in parallel with capacitor C5；One end of the capacitor C6 is connect with the VDD pin of chip BS812A, separately One end is grounded through resistance R3；The capacitor C7 is in parallel with capacitor C6；The anode access 5V voltage of diode DS1, diode DS1's Cathode is connect with the VDD pin of chip BS812A；The Kout1 pin of chip BS812A accesses 5V voltage through resistance R1；Chip The Kout1 pin of BS812A is connect with the P0.1 pin of SN8P2711B single-chip microcontroller.

8. the wireless vehicle mounted charging system of a kind of ultrasonic sensing according to claim 7, it is characterised in that: further include power supply electricity Road (6), the power supply circuit (6) receive with the single chip machine controlling circuit (1), ultrasonic wave transmitting circuit (2), ultrasonic wave respectively Circuit (3), motor drive circuit (4) and touch-control circuit (5) connection, stablize output 5V voltage.